Sheet-iron blind



UNITED'STATES PATENT formen.

yWILLIAM s. WARD, or PORT CHESTER, New YORK. f

SHEET-IRON BLIND.

Specification of Letters Patent No. 12,145, dated' January 2, 1855.'y

To aZZ 'whom t may concern.'

Be it known that I, nWILLIAM E. WARD, of Port Chester, Westchestercounty, and State of New York, have invented a new Manufacture ofSheet-Iron Venetian Window-Blinds, of which the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, making part of this specification, in which-Figure 1, is a face view of a window blind of my improved manufacture;Fig. 2, an elevation of the hinged edge; Figs. 3, and 4, sections takenat the lines A, a and B, of Fig. l; Fig. 5, a section of one of the endrails before it is completed; and Fig. 6, is an edge View of the middlerail in the process of being formed.

The same letters indicate the figures.

The. object of my invention is to produce Venetian window blinds of ironwhich shall present the qualities of being light, strong, durable, lireproof and cheap. And to this end the nature of my invention consists inmaking the frame, for the receptionof the slats, of sheet iron, and inparts so bent and the parts so united as to give the required strengthwith but little weight of metal.

In the accompanying drawings' a, a, represent the two side rails formedof thin sheet iron so bent as to form two partial tubes. The two edgesare turned over in semi, or nearly semi cylindrical form as at b, I),leaving a flat surface c, from end to end, between the two curvedportions, and an open space between the two turned edges. The upper andlower rails d, CZ, made'of sheet metal, are rolled r bent each in theform represented in Fig. 5, that is, with two longitudinal beads e, e,at equal distances from each edge, and the portions from the beads tothe outer edges on each side in segments of circles, or nearly so. Andafter beingthus prepared/they are bent midway between the two beads, andthe two halves brought together so that the two beads will form a hollowtube with the two edges f, f, aring out as in Fig. 4. The distancebetween the two edges f, f, should be equal to the width of the fiatpart c, of the side rails. The middle rail g,- also made of sheet metal,is first prepared, as represented at Fig. 6, by being rolled orotherwise bent with two semi-cylindricel beads t, z, fr, it, two on eachside of the middle line and with two larger and angular beads j, y',

like parts in all And after being thus prepared the sheet is bent overat the line z', midway'between the two sets of beads, the two sets ofbeads 7L, Zz, forming cylindrical tubes and the two lbeads j, y', alsoforming a larger tube equal to the 4Width of the fiat part c, of theside rail. And then finally the one edge 7c, of this sheet is bent andlapped over the other edge.

Holes are punched through the flat part c, of the two side rails, onenear each end, and two near the middle, through which pass screw boltsZ, Z, Z, Z, that also` pass through the tubes formed by thesemi-cylindrical beads of the end rails and the middle rail` by whichthe whole is firmly bound together. The contact of the ends of themiddle and the end rails with the fiat surface of the side rails,together with the spread of the curved edges of the end rails and thelarge beads of theymiddle rail, aided by the spread of the small beads,when the whole is bound together by the screw bolts efectually brace thewhole in all directions.

Small holes are punched through the Hat ,one on; each side between thetwo 'beads Iz, 71.,

part of the side rails to receive the pivot rods m, of the turning slotsn, which are made on the plan secured to meI by Letters Patent bearingdate the 11th day of July 1854; but which may be made in any othersuitable manner. If desired however Xed slats may be substituted.

One edge of one of the side rails is out out near each end, as at o, o,to receive the hinges p, p, which are secured by two of the bolts Z, Z,passing through them-thehinges receiving additional support bybeinglitted into the places out out for them in the edges of the siderails. Or instead of cutting out as above, a slot may be cut throughsutlicient to receive each hinge, the slot being so located that thehinge when inserted can be secured in the manner above described.

If desired the outer edges of the end rails may be made to projectslightly beyond the ends of the side rails, and there form a dovetailvin their cross section for the reception of cap plates g q, which havetheir edges, as at r, fr, bent over, so that they can be slipped on overthe edges of the end rails, thus completely capping the ends.,V AAndntheopen space in the outside face of the side rails is closed up by meansof a strip of sheet iron s, bent along the edges andforced in-v side,and which by its elasticity is kept firmly out against the edges of thetube. But if it be desired to have the inner edges of the blinds lap, asin the case of Wooden blinds, the strip s, can then be rolled orotherwise 'formed with a rabbet t, a correspending reversed rabbet beingformed in the other half blind. I prefer howeverto make the blindsWithout this lap by having the Window as to shut them so hung to againstthe frame thereof.

I do not Wish to be understoed as limiting' myself to the special formof the parts here- WM. E. WARD.

Witnesses:

WM. H. BISHOP, ANDREW DE LACY.

